While attending Yenching University, he was encouraged by William Hung to study the Hakka people and their migration.
[1] In 1934 he married Wai Jane Chun, who collaborated with him on his research on the history of Chinese people in Hawaiʻi.
[1] After earning his Master's degree, Char taught Chinese language and history at the University.
Char and Chun supported the Hawaiʻi Chinese History Center, which was founded in 1971.
After his death, the Asian Pacific Reading Room at Kapiʻolani Community College was dedicated in his and Wai Chun's name.